Legal claims defining the scope of protection, as filed with the USPTO.
1. A modular system for supplying DC power to at least one server, comprising: a DC uninterruptible power supply (UPS) including: an AC-DC converter; and an energy storage device electrically coupled to an output of the AC-DC converter; and a high-frequency DC-DC converter directly connected to the output of the AC-DC converter of the DC UPS, the high-frequency DC-DC converter including a plurality of MOSFETs and a zero-voltage switching controller electrically coupled to the plurality of MOSFETs to output a plurality of DC voltages from the high frequency DC-DC converter, wherein a single power conversion is performed between the energy storage device and the at least one server.
2. The modular system of claim 1 , wherein the energy storage device is a low-voltage battery.
3. The modular system of claim 2 , wherein the low-voltage battery is a 12 V battery, a 24 V battery, or a 48 V battery.
4. The modular system of claim 1 , wherein the energy storage device is a lithium-ion battery or a combination of a lithium-ion battery and an ultra-capacitor.
5. The modular system of claim 1 , wherein the high-frequency DC-DC converter supplies a plurality of DC voltages to the at least one server.
6. The modular system of claim 1 , wherein the DC UPS is connected to one load line of a plurality of load lines.
7. The modular system of claim 1 , further comprising an AC UPS configured in an offline energy saver mode such that power is supplied from the AC UPS to a plurality of cooling distribution units (CDUs) if a disturbance occurs in a utility power source that normally supplies power to the plurality of CDUs.
8. The modular system of claim 7 , wherein the AC UPS includes: an AC-DC converter; a second energy storage device and a bidirectional DC-DC converter electrically coupled in series with a positive terminal of the second energy storage device, the series combination of the second energy storage device and the bidirectional DC-DC converter being coupled in parallel to the AC-DC converter; and a DC-AC inverter electrically coupled in parallel to the series combination of the second energy storage device and the bidirectional DC-DC converter.
9. The modular system of claim 8 , wherein the second energy storage device is a medium voltage battery.
10. The modular system of claim 9 , wherein the medium voltage battery supplies voltage between 250 V and 450 V.
11. A system for supplying DC power to at least one server, comprising: a DC uninterruptible power supply (UPS) including: an AC-DC converter; and an energy storage device electrically coupled in parallel with an output of the AC-DC converter; and a high-frequency DC-DC converter directly connected to the output of the AC-DC converter of the DC UPS, the high-frequency DC-DC converter including a plurality of MOSFETs and a zero-voltage switching controller electrically coupled to the plurality of MOSFETs to output a plurality of DC voltages from the high frequency DC-DC converter.
12. The system of claim 11 , wherein a single power conversion is performed between the energy storage device and the at least one server.
13. The system of claim 11 , further comprising an AC UPS configured in an offline energy saver mode such that power is supplied from the AC UPS to a plurality of cooling distribution units (CDUs) if a disturbance occurs in a utility power source that normally supplies power to the plurality of CDUs.
14. A system for supplying DC power to at least one server, comprising: a DC uninterruptible power supply (UPS) including: an AC-DC converter; and an energy storage device electrically coupled to an output of the AC-DC converter; a high-frequency DC-DC converter directly connected to the output of the AC-DC converter of the DC UPS, the high-frequency DC-DC converter including a plurality of MOSFETs and a zero-voltage switching controller electrically coupled to the plurality of MOSFETs to output a plurality of DC voltages from the high frequency DC-DC converter; and an AC UPS configured in an offline energy saver mode such that power is supplied from the AC UPS to a plurality of cooling distribution units (CDUs) if a disturbance occurs in a utility power source that normally supplies power to the plurality of CDUs.
15. The system of claim 14 , wherein the AC UPS includes: an AC-DC converter; a second energy storage device and a bidirectional DC-DC converter electrically coupled in series with a positive terminal of the second energy storage device, the series combination of the second energy storage device and the bidirectional DC-DC converter being coupled in parallel to the AC-DC converter; and a DC-AC inverter electrically coupled in parallel to the series combination of the second energy storage device and the bidirectional DC-DC converter.
16. The system of claim 15 , wherein the second energy storage device is a medium voltage battery.
17. The system of claim 16 , wherein the medium voltage battery supplies voltage between 250 V and 450 V.
18. The system of claim 14 , wherein a single power conversion is performed between the energy storage device and the at least one server.
19. The system of claim 14 , wherein the high-frequency DC-DC converter supplies a plurality of DC voltages to the at least one server.
20. The system of claim 14 , wherein the DC UPS is connected to one load line of a plurality of load lines.
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June 23, 2020
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